Reduced graphene oxide (rGO) is a very stable material with tunable electronic properties dependent on its reduction level. Nevertheless, the incorporation of rGO into perovskite solar cells (PSCs) frequently demonstrates inconsistent results, and it plays an ambiguous role. Here, we systematically explore rGO as an additive in perovskite and 2,2′,7,7′-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′-spirobifluorene (spiro-MeOTAD) using different reduction levels (O18.42%, O9.67%, and O7.14%). Perovskite with rGO_O9.67% results in the most stable shelf stability, demonstrating a negligible performance degradation over 430 h, while the one without rGO shows a 6.4% drop, mainly due to fill-factor deterioration. Moreover, the improved stability is more pronounced when rGO_O9.67% is employed with spiro-MeOTAD where crystallization is effectively retarded. The integrated effect is also observed in PSCs based on rGO_O9.67% in both perovskite and spiro-MeOTAD, leading to enhanced stability at 85°C and 45% relative humidity.

还原氧化石墨烯（rGO）是非常稳定的材料，取决于其还原水平，其电子性能可调节。然而，将rGO掺入钙钛矿太阳能电池（PSC）中经常显示出不一致的结果，并且起着模棱两可的作用。在这里，我们系统地研究了rGO在钙钛矿和2,2'，7,7'-四[N，N-二（4-甲氧基苯基）氨基] -9,9'-螺双芴（spiro-MeOTAD）中的添加剂降低水平（O18.42％，O9.67％和O7.14％）。含_{rGO O9.67％的}钙钛矿_可获得最稳定的货架稳定性，表明在430小时内性能下降可忽略不计，而没有_rGO的钙钛矿则下降了6.4％，这主要是由于填充因子下降所致。此外，_{rGO为O9.67％}时，稳定性提高更为明显。与spiro-MeOTAD一起使用时，可有效阻止结晶。在钙钛矿和螺-MeOTAD中基于_{rGO O9.67％的}PSC中也观察到了综合作用，从而提高了在85°C和45％相对湿度下的稳定性。